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更多“stress fracture”相关的问题
Which of the following is TRUE concerning creep()
A．Typically results in bulk fracture of the restoration
B．Is comhlon in high copper alloys
C．Occurs more frequently within the eta phase
D．Correlates with marginal breakdown
A．the tooth will be sensitive
B．the bond needs time to mature
C．the crown may fracture
D．the cement shade will change drastically
The two major problems with posterior composite resin materials are()
A．wear resistance
B．bulk fracture due to lack Of tensile strength
C．difficulty in attaining a good proximal contact
D．difficulty in sealing the gingival margin of a classⅡpreparation
The use of DBA’s(dentin bonding agents)when dentin is exposed in a preparation prior to cementation of porcelain composite restorations()
A．increases bond strength
B．reduces microleakage
C．reduces post operative sensitivity
D．increases possibility of fracture of restoration
Stress and______are symptoms of life in modern society.
A．leisure
B．anxiety
C．nervousness
D．emotion
A.stress
B.tone
C.voicing
D.intonation
A.错误
B.正确
Stress can affect the respiratory system by_____.
A．decreasing the pulse rate
B．a loss of carbon dioxide
C．causing breathing problems
D．causing asthma
